I recently replaced a burnt spark plug wire with an accel wire using the connection boots from the moroso wire. Now here is my problem...I have a miss in 3rd, 4th and 5th after 4500 rpm....what could this be??

coil? more burnt wires? bad plugs? maf? fuel? possible the opti...which has been replaced once and fixed once?

 

Just a heads up, when the Opti starts to do, it'll miss high end...


On another note, a cheaper solution would be to replace all your plugd and wires, including the coil wire, if that doesn't fix it, replace the coil... Then if that doesn't work, it'll be a new Opti for you.

 

Crap, I completely forgot about fuel being a possiable issue! lol... Change your fuel filter, and maybe run some injector cleaner.

 

Do it once. Do it right.

Replace all the wires with Taylor or MSDs and use lots of zipties to make sure they don't touch the headers.

First though, open you hood at night in pitch darkness and look for blue sparks on the plug wires.

 

thanks guys...I will check for sparks tmrw.

 

ohh, and ive replaced the fuel filter, the wires, and coil wire about 8000 kms ago